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- parser for states flags.

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This commit is contained in:
Christoph Oelckers 2016-11-14 19:35:29 +01:00
commit 7bcd83f0c1
6 changed files with 87 additions and 43 deletions
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23
src/scripting/zscript/zcc-parse.lemon
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@ -418,14 +418,37 @@ enumerator(X) ::= IDENTIFIER(A) EQ expr(B). /* Expression must be constant. */
%type state_call_params {ZCC_FuncParm *}
%type state_opts {StateOpts}
%type states_opts { ZCC_Identifier *}
%type states_opt { ZCC_Identifier *}
states_def(X) ::= STATES(T) scanner_mode LBRACE states_body(A) RBRACE.
states_def(X) ::= STATES(T) states_opts(B) scanner_mode LBRACE states_body(A) RBRACE.
{
NEW_AST_NODE(States,def,T);
def->Flags = B;
def->Body = A;
X = def;
}
states_opts(X) ::= . { X = nullptr; }
states_opts(X) ::= LPAREN states_opt(A) RPAREN. { X = A; /*X-overwrites-A*/ }
states_opt(X) ::= IDENTIFIER(A).
{
NEW_AST_NODE(Identifier,id,A);
id->Id = A.Name();
X = id;
}
states_opt(X) ::= states_opt(A) COMMA IDENTIFIER(B).
{
NEW_AST_NODE(Identifier,id,B);
id->Id = B.Name();
X = A; /*X-overwrites-A*/
X->AppendSibling(id);
}
/* We use a special scanner mode to allow for sprite names and frame characters
* to not be quoted even if they contain special characters. The scanner_mode
* nonterminal is used to enter this mode. The scanner automatically leaves it